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Suspended magnets are used to remove damaging tramp metals (ferrous/iron) from conveyed materials. These magnets improve product purity and protect downstream crushers, mills, pulverizers and grinders, and remove sharp metal that can damage or tear expensive conveyor belts.
| width | 800mm |
|---|---|
| magent intensity | 700Gs |
| Suspended height | 250mm |
| Material thickness | 200mm |
| Model | RCYB-8 |
| Belt width | 800mm |
| Magnet field | 700Gs |
| Material thickness | 200mm |
| Suspended height | 250mm |
| Dimension | 800*600*350mm |
| Weight | 500kg |
Suspended magnets are used to remove damaging tramp metals (ferrous/iron) from conveyed materials. These magnets improve product purity and protect downstream crushers, mills, pulverizers and grinders, and remove sharp metal that can damage or tear expensive conveyor belts.
PERMANENT AND ELECTRO MAGNETS
Permanent and electromagnetic suspended magnets are used in a wide range of applications.
Permanent Magnets
Suspended Permanent Magnets use ceramic magnetic material arranged in a very specific pattern to create a powerful magnetic field. Each model is designed for the application based on conveyor width and speed, material burden depth, as well as the density or frequency of tramp iron present in the process. The magnets are permanently charged so they require no external power source. Typical applications involve light industrial applications like wood, tire chips or light aggregate recycling.
Electromagnets
For larger industrial separation applications, an electromagnetic separator may be required. The popular round-core electromagnet uses round aluminum or copper wire in an oil-filled assembly to generate a powerful electromagnetic field. Eriez uses advanced multi- dimensional finite element analysis to model each magnetic circuit ensuring optimum performance.
These electromagnets efficiently remove ferrous metals in heavy industrial applications like coal, limestone, sand and other aggregates.
Eriez offers a variety of electromagnetic configurations including oil and air-cooled; round and rectangular core; explosion proof; even cryogenic superconducting magnets capable of producing the world’s strongest magnetic force for separation applications.
MANUAL OR SELF-CLEANING
Manual-Cleaning (MC) Models
MC models are cleaned of accumulated tramp iron by turning off magnet power periodically. MC models are recommended when occasional pieces or small amounts of iron may contaminate material flow.
Self-Cleaning (SC) Models
SC models have a short belt conveyor built around the magnet for automatic removal of tramp iron from the magnet face.
This system features a rubber conveyor belt, bearings, rugged continuous channel frame, adjustable take-ups and shaft-mounted reducer with V-belt coupling to a TEFC motor.
FACTORS INFLUENCING TRAMP METAL COLLECTION
Belt Speed: As the belt speed increases, it becomes more difficult to remove ferrous components. Larger, stronger magnets may be required for faster belt speeds.
Burden Depth: As the burden depth on the conveyor belt increases, an increase in the magnetic field strength is needed to pull the tramp iron up through the deeper burden.
Ferrous Contaminant Size: Small pieces of tramp metal (i.e. 1/2″ hex nut, 1″ cube, etc.) may be extremely difficult to remove especially when they are covered by a heavy overburden of material, compared to large items like shovel teeth, rail spikes or rebar.
Ferrous Contaminant Shape: Steel plate has a high surface area relative to its weight vs. a sphere which has the lowest surface area relative to its weight. Therefore, flat plates and rod shaped tramp metal are easier to remove than spherical or cube shaped tramp metal.
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